Alfred a



ANDERSON;

MORTAR-MILL DEC 24.1867

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ALFRED A. ANDERSON, OF GAL ESBURG, ILLINOIS. Letters Patent No. 72,440,dated December 24, 1867.

IMPROVED MORTAR-MILL,

To ALL WHOM IT MAY coNcnnN.

Be it known that I, ALFRED A. Annnnsou, of Galesb'urg, in the county ofKnox, and State of Illinois, have invented certain new and usefulImprovements in Machines for Mixing- Mortar; and I do hereby declarethat thefollow'ing is a full, clear, and exact description thereof,reference being had to the accompanying drawings, making part of thisspecification, and to the lettersof reference marked thereon, likeletters indieating like parts wherever they occur.

To enable others skilled in the art to construct and use my invention, Iwill proceed to describe My invention-consists of a machine for grindingand mixing mortar for use in building walls, plastering buildings, &c.,-as hereinafter described. i i

Figure 1 represents a side elevation, with a portion of ,the case-brokenaway to exhibit the internal arrangement.

Figure 2 is a rear-end view and Figures 3 and 4 views 'of differentforms of the grinding and mixing-rolls.

' In preparing mortar. for use, either in laying up walls or forplastering the walls and ceilings of buildings,

it is customary to incorporate or. mix the ingredients by hand, which isa. slow and laborious process. The

object of my present invention is to provide a machine for doing thiswork, whereby the labor may be lessened and the operation greatlyexpedited. I

To accomplish this object, Iprovide a cylindrical metallic case, A, moreor less conical, as represented in fig. 1, and mount it upon a. suitableframe, D,'which'should be provided with axles for mounting the machineon wheels, for'conveying it from place to p1ace,.as required, for use.Upon this case, near itsrcar or larger end, is secured a hopper, B, forreceiving'the materials to be mixed, there-being an opening at thebottom of .this hopper, through into the case A, to permit thematerialto pass to the grinding and mixing-apparatus located within. 7

The grinding and mixing-apparatus consistsof a. spirally-grooved orfluted roller, 0, of such a size as nearly to fill the interior of thecaseA, it being made conical to correspond therewith, and mounted onjour nals at each end,so' as to revolve freely in the case. Upon thecndof the journal, at the rear end of the machine, ;is secured a geanwheel,6, which gears into a pinion, e, mounted in the fram'e by its side; andby means of [a handle or crank, h,-motion is imparted to the pinion e,and thereby to thecylinder G, which is thus made tot-evolve in such adirection as that the grooves or flanges, while thoroughly grinding andmixing the material fed 'inatthe hopper, shallat the same time workthe'same forward to the front or smaller end of the cylinder, where itpasses out through an opening in the lower side of the case, asrepresented in fig. 1.

' Insteadof-thespirally grooved roller 0, other forms may be used, andfor some kinds of mortar may be preferablef In fig, 3 is represented amodification of the grinding-cylinder, which consists of a plain conicalroller, I, having a series of radial flanges projecting from its surfaceand arranged spirally thereon, as shown; or it may consist of a centralshaft having heads E F secured at its opposite ends, with a series ofplain, grooved, or spiral ,rolls, as represented by i l t, fig. 4,secured thereto in such a manner as to revolve on their journals in saidheads E and F; these varion's 'forms being used as may be preferred.

In order to permit of' the ready removal and changing of the differentstyles of grinding-cylinders, the rear end, A, of thecase A is maderemovable, it being held in place by means of pivoted latches or bars1;, on opposite sides of the case, which hook over projecting lugs onthe end piece A. 7

It is of course obvious'that the machine may be operated by animal orsteam-power instead of hand-power, and that it may be made of anyrequired size, to adapt it for use on a large or small scale, asrequired.

Having thus'described my invention, what I claim, is-

A mortar-mixing machine, consisting of the case A, provided with ahopper, B, detachable end piece A, and the gear-wheels b 0, arranged tooperate a grinding or mixing-cylinderplaced within the hopper, the wholeconstructed and mountedon a carriage, substantially as described.

ALFRED A. ANDERSON.

Witnesses J. B. Bocss, I. R. HoL'LowBUsn.

